| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Longmao Chem | Industrial Grade | MT | 4371.25 | USD | 20251023 |
| Weifang Longmao Chem | Industrial Grade | MT | 4369.03 | USD | 20251022 |
| Weifang Longmao Chem | Industrial Grade | MT | 4370.51 | USD | 20251021 |
| Weifang Longmao Chem | Industrial Grade | MT | 4226.96 | USD | 20251020 |
| Weifang Longmao Chem | Industrial Grade | MT | 3945.44 | USD | 20251016 |
| Weifang Longmao Chem | Industrial Grade | MT | 3942.5 | USD | 20251014 |
| Weifang Longmao Chem | Industrial Grade | MT | 3943.27 | USD | 20251013 |
| Weifang Longmao Chem | China national standards | MT | 3941.0 | USD | 20251011 |
| Weifang Longmao Chem | Industrial Grade | MT | 3941.0 | USD | 20251010 |
| Weifang Longmao Chem | Industrial Grade | MT | 3940.61 | USD | 20250930 |